Pressing implement



L. HOFFMAN PRES S ING IMPLEMENT Filed March l, 1920 2 Shasta-Sheet l,

\A, A w Nm.,

L. HOFFMAN PRESSING IMPLEMENT Filed march 1 1920 2 sant-sheet 2 Imfmftav /TTEHS ls'raes Patented ug, S 1

1,503,501 PATENT oFFlcE.

LOUIS HOFFMAN, OF DUL'UTH, MINNESOTA, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 STEAM PRESSING IRON COMPANY, A CORPORATION OF DELAWARE rnnssmo IMPLEMENT.

Application led March 1, 1920. Serial No. 362,624.

Ta all whom t may concern.'

Be it known that I, LOUIS HOFFMAN, a citizen of the United States, residing at Duluth, in the county ofSt. Louis and State of Minnesota, have invented certain new and useful Improvements in Pressing Implements, of which the` following is :a

specication.

My invention relates to the `manufacture of implements for moistening and lpressing clothing and cloth goods, or the like, and more especially to the manufacture of` a sad iron or tailors goose intended to be continuously heated and to inject moisture in the form of steam against the goods or garment being pressed (obviating the lnecessity of sponging or sprinkling such goods or garment), an implement of this type being either supplied with water, which is generated into steam and heated to the temperature desired by means of a heating element associated with sai-d implement, or being supplied with steam which, if a separate heating element is used, such as a gas burner, for example, will be dried and superheated in passing through the body lof the implement to the pressing surface thereof.

One of the principal objects of the inventionis to provide a novel pressing and moistening implement of this general character which may be conveniently and cheaply manufactured, and a new and useful method of manufacturing the same.

A further object is to provide a moistening and pressing implement of the character described which will be composed in part or wholly of a metal or metals havinga coefiicient of thermal conductivity considerably higher than that of cast iron of which lat irons and the like have usually been made, whereby the efficiency of the implement is increased, more especially when moisture is supplied in the form of water to be'gene'rated into steam in the body of the device. In this respect the invention of the present application is an improvement upon the pressing implement described and claimed, more generically so far as regards this feature,'in`m`y copending application Serial No. 343,409, led December 8, 1919.

The invention is illustrated .in a preferred embodiment, susceptible, however, of

very considerable modification, as will be apparent, in the accompanying drawings wherein Fig. l'is a vertical sectional view of a tailors goose of the moistening, self heated type, constructed in accordance With the principles vof my invention.

Fig. 2 is a fragmentary inverted plan l view of the implement.

Flg. 3 1s a View, in perspective, of certain parts of the lmplement toillustrate parl.ticularly the improved method of manufacturing the same, and

Fig. 4 is a sectional view on line 4-4 of Fi 1, omitting the burner.

ike characters of reference designate like parts in the several figures ofthe drawings.

Referringto the' drawings, the body of the sad iron or tailors goose is composedof a cast metal, hollow core 10, a pipe coil 11 and a body of east metal 12 in which the core and coil are embedded. The coil has. an extended portion 13 l ing between the core and the pressing sur ace 14 of the implement, this part of the coil being preferably bent and disposed as best shown in Figs. 2 and 3` so as to distribute moisture in the form of steam, generated or superheated in the coil, to' a considerable number of different points on the pressing surface, lower end of the coil is closed by means of a screw plug 16,y for example, and the upper end isset into a valve casing 17, the duct -18 of which communicates with the coil and is controlled by a valve 19. This valve is shown as a rotary valve threaded through an annular member ,20 fixed within the easing 17 and is provided withl an operating lever 21 having a finger piece 22 for convenience in manipulating it. A packing 23 is interposed between the annular member 2Q and packing nut 24. 25 is a pipe to which a flexible tube (not shown) may be connected for conducting water o r steam to the valve casing 17. A plate 26 is secured to the top of the body of the implement by means of screws 27 and the support 28 for the handle 29 is secured to the plate by screws 30. insulating material 3l is placed betweenthe plate 26 and the body of the implement.' These details of construction of the valve and handle form no part of my present invention. If the implement vis supplied with steam at through perforations 15.. The Y relatively' high temperature it will not be 'chamber 33 wlthin core 10, which is made hollow, through an opening in the hinged door 33a with which the device is preferably furnished.

The pipe coil 11 is preferably made of some metal having a relatively h1 h coefcient of thermal conductivity an which will be suiciently pliable toallow it to bc bent to the extent required. Preferably I employ copper tubing for this purpose. The core 10 and the body of the implement 12 are composed preferably of aluminum or aluminum alloyed with copper. There is a great advantage in making the implement of these metals both of which transmit heat rapidly; and this is particularly so where the moistening medium is supplied in the form of water. It has been found very diiiicult in practice to provide a cast iron tailors goose or sad iron of the moistening type which can be successfully used when supplied with water to be generated into steanr inthe iron. The ow of water through the water duct of the iron cools the metal surfaces with which it comes into Contact so that either the water will not flash into steam, after the device has been in operation for a short time, or the vaporization is not complete so that the goods are moistened to too great an extent and.

the moistening fluid applied at too low a temperature. The higher the temperature of the moisture applied to the goods and the smaller the amount of moisture in excess of -what is required) the vmore quickly and easier will the pressingoperation `be performed. By having the moisture ductof a `pressing implement of this type composed of copper, or other metal having a high coefficient of thermal conductivity the cooling of the walls of the duct by the contact of the continuously supplied, relatively cold water willbe minimized, particularly if the body of the implement be also composed of metal, such yas aluminum, for example, which also has a high coeiiicient of thermal conductivity. With the implement so made a rapid equalization takes place as between the parts of the device more and less affected b the cooling influence of the wnter whici makes it possible to generate' and deliver relatively dry steam to the pressing surface of the implement and which minimizes the danger of scorching the goods by application of too much heat to the base of the implement.

The method of making the device above described is as follows: The hollow core 10 is first formed by casting, preferably. The core is preferably formed with a spiral corrugation and the copper tubing is coiled around the outside of the core in the groove provided by the corrugated configuration of the outer surface and the valve casing 17 set on or fitted to its upper extremity, the lower portion being -bent so as to form a substantially horizontally disposed coil 13 below the core 10. The parts as thus assembled (as shown in Fig. 3) are placed in a suitab1e,mold, preferably a metal chill, and the bodfy portion 12 of the implement is formed y casting molten aluminum around them. During the casting cold water is preferably run through the coil to prevent it from being melted, the lower end of the coil being left open and registerin with an outlet opening in the mold.

en this operation is completed the bottom surface of the implement may be machined or otherwise smoothed, the perforations 15 drilled through the base portion of the implement and the adjoining portion 13 of the pipe coil and the lower end of the coil closed by plug 16. The other parts of the device are then assembled in a manner which will be obvious.

I claim:

1. A moistening and pressing implement comprising, in combination, a metal core, tubing surrounding said core, and a body of cast metal in which said core and tubing are embedded, said tubing being provided with a dischar e opening to direct moisture to the materia being pressed.

2. A moistening and pressing implement comprising, in combination, a metal core, a pipe, providing al moisture duct, coiled around said core and having an extension below the same, and a body of cast metal in which said core and pipe are embedded, said extension being provided with a discharge opening to direct moisture to the material being pressed.

3. A moistening and ressing implement comprising, in combination, a metal core, a pipe, providing a moisture duct, coiled around said core and having an extension below the same, and a body of cast metal in which said core and pipe are embedded and which provides a pressing surface, said body of cast metal and the extension of said pipe being formed with aligning perforations for conducting moisture to said pressing surface.

4. A moistening and pressing' implement comprising, in combination, a metal core tubing surrounding said core', anda body oi2 cast metal in which said core and tubing are embedded, which provides a pressing surface, said body and tubing being pierced to conduct moisture to said surface.

5. A moistening and pressing imple-ment comprising, in combination, a metal core formed with a heating chamber, tubing surrounding said core, a body of cast metal in which said core and tubing are embedded and which provides a heat distributing member of the implement, and a heating element arranged in said heating chamber; said tubing and body being ierced tov conduct moisture to the material eing pressed.

y 6. A moistening and ressing implement comprising, in combination, a metal core, a

ipe coil surrounding said core, a valve casmg arranged at one end of and communicating with the pipe coil, and a body of cast metal in which said pipe coil and a portion of said valve casing are embedded.

7. A tailor-s goose comprising, in combination, a core, metal tubing coiled around the co're and extending back and fo-rthunder der the core, and a body of cast metal in which said core and tubing are embedded, said body and tubing being perforated for conducting moisture to the pressing surface of the implement.

Louis HOFFMAN. 

